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arXiv · 1602.01449

Development of an Ideal Observer that Incorporates Nuisance Parameters and Processes List-Mode Data

Christopher J. MacGahan·Matthew A. Kupinski·Nathan R. Hilton·Erik M. Brubaker·William C. Johnson
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Abstract

Observer models were developed to process data in list-mode format in order to perform binary discrimination tasks for use in an arms-control-treaty context. Data used in this study was generated using GEANT4 Monte Carlo simulations for photons using custom models of plutonium inspection objects and a radiation imaging system. Observer model performance was evaluated and presented using the area under the receiver operating characteristic curve. The ideal observer was studied under both signal-known-exactly conditions and in the presence of unknowns such as object orientation and absolute count-rate variability; when these additional sources of randomness were present, their incorporation into the observer yielded superior performance.

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Christopher J. MacGahan, Matthew A. Kupinski, Nathan R. Hilton, Erik M. Brubaker, William C. Johnson. 2016-02-02. Development of an Ideal Observer that Incorporates Nuisance Parameters and Processes List-Mode Data. https://doi.org/10.1364/josaa.33.000689

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